﻿// ———————————————————————–
// <copyright file="LocationEllipse.cs" company="The MITRE Corporation">
//    Copyright (c) 2014 The MITRE Corporation. All rights reserved.
//    Licensed under the Apache License, Version 2.0 (the "License");
//    you may not use this file except in compliance with the License.
//    You may obtain a copy of the License at
//    http://www.apache.org/licenses/LICENSE-2.0
//    Unless required by applicable law or agreed to in writing, software
//    distributed under the License is distributed on an "AS IS" BASIS,
//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//    See the License for the specific language governing permissions and
//    limitations under the License.
// </copyright>
// ———————————————————————–
/////////////////////////////////////////////////////////////////////////////////////////////////
// LocationLineString.cs:
//
// A  area region described by an ellipse specified by a point, major axis, minor axis and rotation,
// using WGS84, meters, and decimal degrees.
//
// Project: IC.NET - CAD Library
// Author:  Jim Cronin - MITRE
/////////////////////////////////////////////////////////////////////////////////////////////////

// Copyright (c) 2014 The MITRE Corporation. All rights reserved.
//
// NOTICE
// This software was produced for the U. S. Government
// under Contract No. FA8721-09-C-0001, and is
// subject to the Rights in Noncommercial Computer Software
// and Noncommercial Computer Software Documentation Clause
// (DFARS) 252.227-7014 (JUN 1995)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using EDXLSharp.NIEMCore;
using GeoOASISWhereLib;

namespace EDXLSharp.NIEMMilOpsLib
{
  /// <summary>
  /// A  area region described by an ellipse specified by a point, major axis, minor axis and rotation,
  /// using WGS84, meters, and decimal degrees.
  /// </summary>
  public class LocationEllipse : IAreaRegion
  {
    //TODO: LocationEllipse - Not using ComplexTypeBase at this time - expand later if needed

    public GMLEllipse Ellipse;

    /// <summary>
    /// Writes this Object to an inline XML Document
    /// </summary>
    /// <param name="xwriter">Valid XMLWriter</param>
    /// <exception cref="System.ArgumentNullException">Thrown if xwriter is null</exception>
    /// <exception cref="EDXLSharp.ValidationException">Thrown if the object fails to validate</exception>
    public void WriteXML(XmlWriter xwriter)
    {
      if (xwriter == null)
      {
        throw new ArgumentNullException("xwriter");
      }

      Validate();

      xwriter.WriteStartElement("LocationEllipse", EDXLConstants.MilopsNamespace);
      Ellipse.WriteXML(xwriter);
      xwriter.WriteEndElement();
    }

    /// <summary>
    /// Reads this Object's values from an XML nodelist
    /// </summary>
    /// <param name="rootnode">root XML Node of the Object element</param>
    /// <exception cref="System.ArgumentNullException">Thrown if rootnode is null</exception>
    /// <exception cref="System.ArgumentException">Thrown if the rootnode is not the correct type</exception>
    /// <exception cref="EDXLSharp.ValidationException">Thrown if the object fails to validate</exception>
    public void ReadXML(XmlNode rootnode)
    {
      if (rootnode == null)
      {
        throw new ArgumentNullException("rootnode");
      }
      if (rootnode.LocalName != "LocationEllipse")
      {
        throw new ArgumentException("Unexpected element " + rootnode.LocalName + " instead of LocationEllipse");
      }

      if (rootnode.ChildNodes.Count != 1)
      {
        throw new ArgumentException("LocationEllipse should have exactly one child element");
      }
      try
      {
        Ellipse = new GMLEllipse();
        Ellipse.ReadXML(rootnode.ChildNodes[0]);
      }
      catch (Exception ex)
      {
        throw new ArgumentException("Failed to parse Ellipse XML. See inner exception for details", ex);
      }

      Validate();
    }

    /// <summary>
    /// Validates This Message element For Required Values and Conformance
    /// </summary>
    /// <exception cref="EDXLSharp.ValidationException">Thrown if the object fails to validate</exception>
    public void Validate()
    {
      /*
        <sch:assert test="xls:Ellipse/xls:majorAxis/@uom='meter' and xls:Ellipse/xls:minorAxis/@uom='meter'">
            Elements of mof:EllipseType MUST use meters for length values.
        </sch:assert>
       */
      
      /*
        <sch:assert test="xls:Ellipse/xls:rotation/@uom='degree'">
            Elements of mof:EllipseType MUST use degrees for angle values.
        </sch:assert>
       */
      
      /*
        <sch:assert test="xls:Ellipse/gml:pos[ancestor-or-self::*[exists(@srsName)][1]/@srsName = 'http://metadata.ces.mil/mdr/ns/GSIP/crs/WGS84E_3D']"> 
            Elements of mof:EllipseType MUST use the WGS84 coordinate reference system. 
        </sch:assert>
       */
      Uri wgsUri = new Uri("http://metadata.ces.mil/mdr/ns/GSIP/crs/WGS84E_3D");

      //TODO: LocationEllipse.Validate
      throw new NotImplementedException("LocationEllipse.Validate");
    }

    /// <summary>
    /// Parses a LocationEllipse from an XML node
    /// </summary>
    /// <param name="node">The XML to parse</param>
    /// <returns>A new instance of LocationEllipse from the given XML</returns>
    /// <exception cref="System.ArgumentNullException">Thrown if node is null</exception>
    /// <exception cref="System.ArgumentException">Thrown if the node is not the correct type</exception>
    /// <exception cref="EDXLSharp.ValidationException">Thrown if the object fails to validate</exception>
    public static LocationEllipse Parse(XmlNode node)
    {
      LocationEllipse le = new LocationEllipse();
      le.ReadXML(node);
      return le;
    }
  }
}